flutter riverpod:如何测试asyncvalue.error？

import 'package:flutter_riverpod/flutter_riverpod.dart';

final exampleProvider = FutureProvider<int>((ref) async {
  // 这里是一个异步操作，可能会抛出异常
  // 例如，从服务器获取数据
  throw Exception('Error occurred');
});

test('Test AsyncValue.error', () async {
  final container = ProviderContainer();

  // 使用when来模拟Provider的值
  when(exampleProvider).thenReturn(AsyncValue.error(Exception('Error occurred')));

  // 使用container来获取Provider的值
  final result = container.read(exampleProvider);

  // 使用expect来断言Provider的值是否为AsyncValue.error
  expect(result, AsyncValue.error(Exception('Error occurred')));
});